Add -v / --version commands, update help message

Signed-off-by: Kevin Van Lierde <[email protected]>

src/usr/share/tuxedo-backlight-control/backlight.py

@@ -19,6 +19,7 @@
 class BacklightControl():
     DEVICE_PATH = '/sys/devices/platform/tuxedo_keyboard/'
     MODULE_PATH = '/sys/module/tuxedo_keyboard'
+    VERSION = '0.5'
 
     modes = (
         'color',
@@ -161,10 +162,14 @@ def display_colors(self):
     if cmd == '--help' or cmd == '-h':
         with open(sd + '/help.txt', 'r') as fin:
             exit(fin.read())
+
+    if cmd == '--version' or cmd == '-v':
+        exit(BacklightControl.VERSION)
 
     if not os.path.isdir(BacklightControl.DEVICE_PATH):
         exit('Tuxedo Backlight Ctrl: The tuxedo_keyboard module is not installed at ' + BacklightControl.DEVICE_PATH)
-    elif cmd == 'ui':
+
+    if cmd == 'ui':
         subprocess.call(['/usr/share/tuxedo-backlight-control/ui.py'])
     elif cmd == 'off':
         backlight.state = 0

src/usr/share/tuxedo-backlight-control/help.txt

@@ -5,6 +5,8 @@ By Kevin Van Lierde <[email protected]>
 Usage:
     -h, --help            Display this message
 
+    -v, --version         Display app version
+
     ui                    Start the TUXEDO Backlight Control UI
 
     off                   Turn off keyboard backlight
@@ -15,8 +17,8 @@ Usage:
     color  <color>{1,4}   Set the keyboard backlight to a single color, one of:
                           white, silver, gray, yellow, orange, red, maroon, crimson,
                           fuchsia, purple, rose, cyan, turquoise, teal, blue, navy,
-                          olive, lime, green,
-                          OR any valid colors defined in /etc/tuxedo-backlight-control/colors.conf
+                          olive, lime, green, OR any valid color_name=hex_value pairs
+                          defined in /etc/tuxedo-backlight-control/colors.conf
 
                           Alternatively, set the keyboard to 4 distinct colors,
                           in the order: left, center, right, extra. Only regions supported